Apparatus for charging melting pots of typesetting machines



M FQ Q M A. 0. H588 El AL Mmhm 1945.

'APPARATUS FOR CHARGING MELTING POTS OF TYPESETTING MACHINES Filed Feb. 5, 1944 Patented Mar. 20, 1945 rammes ron i i-am,alsov .MELIiNG POTS 0F TYPESETTING MACHINE Andrew Olding Hebb, Newmarket, Ontario, "and William A. Whitney, Toronto, Ofitaio,-0anada Api lication February 5, 1944, Serial No. 521.202

' (o1 .'22-so) I 7 Claims. -:'Ih.ls invention relates more-particula y t om ara-tus for chargi-ng a melting not used on tvpes t ingmachines and our object is to devise simple apparatus of "this nature which may be manufa tur d ch aply. w ich may be r adily-a ta hed to -existing ma hin s, which will be automa ic. in op rationand w ich may be easily adjus ed to vary the'amountied.

The invention is fill'l-Y-idBSCll'bfidi fiHd illustralifld, ay of xam le. in theaccomuanyin drawiug'in which.

Figure lzis-a longitudinal section, partly in side elevation oi -ou invention appl ed towa machin having a tiltable melting pot;

Figure a plan view thereof; and Fi e-8 a cross-se tion ion the. line, 3-3 in Figure :1.

' --In the drawing like numerals of reference ind cate eorrespon ingpa ts in t e different figures.

.1 is a tiltable melting pot of a typesetting machineof ordinary construction and operation.

' l he Pot is pivoted at 2 on the frame 3 or the machine and is oscillated thereon to discharge netal through the channel 4 to type forming molds, not shown. The-means for imparting oscillatory movement to the pot is not shown since various means of doing-so are well known in the art. The usual plunger 5 andcylinder or well ien ure the discharge of the metalto said molds. and the usual manner. Means,for feeding used slugs 1 automatically to the p t to replenish the supply of metal therein are provided andsuch .means comprise a stationary guide 8 secured to W- e t part ofthe viramat of the typesetting machine. The gui has sides 9 which are securedtogetherat each end. in spaced relationship Pay-cro s bars 10. Aired I3 is slidably mounted in-open bearings l2 formed in upwardly extending portion ll so that the rod may bereciprocatedtherein relative to the guide and may --.be readily removed tromthe bearings. Atollower l4 .slidably mounted on the rod IScarI-ies a pawl which enga esserrations or ratchet teeth =16 fo med, on "the .rod whereby a movement vin one direction or the od will. cause a orr sp n movement of the. :Iollower. I

To reduce lost :motion between the rod and the followen'a, plurality-oi nawls I5 of different lengths are employed so that one of the pawls will be positioned for early engagement by one of the teeth 16.

Usually the used slugs 1 are carried in galleys I! each having an open end so that the slugs may be pushed therethrough to discharge them therefrom. The guide Bis adapted to receive a roller :11 and isrrovided withasetscrew L8 to ecu e theeallcy in .position- If efollower d4 enga es the slu s 1 atamoint rem te from the op n end of the alley and is zhrovided -with a cramping member .19 tor crampin en agement with the bot om or the galley to loci; the rollower from return movement awhenthe rod :13 is returned to its initial position. Thus the :rod impa ts an ntermittent movement n the feedine direction only to he iollower. Moreover. the teeth It extend along e rod '3 tea p in whereby the follower isintermitten ly 'moved on y a sujfliei n di tance to discharge all the slugs in the galley. Wh n thispoint is r ached,

the pot is tilted .to discharge :a portion of its contents, to engage a detent, or .a hook 2i pivotally connected with a collar 22 which is secured to the end of the rod l3 and is.longitudinally adjustable thereon. The stroke of the rod 1.3 and thusof .the follower l4 may be varied relativeto that .of the shoulder .by shifting .the acol1ar22 and thus the-detentll relativetothe shoulder whereby the lostmotion may be varied. v.Therod 13 may be returned toits initial'position by any suitable. means such as-one or more. springs 23 secured to th rod and .to any suitable stationary part such as the adjacent upwardly extending portions of theguide 8. Anysuitable stopmeans may be provided-to limit the return movement of the vrod .to (maintain the desired setting-of the detent 2| relative to the. shoulder 20 on the next tilting aotionof the pot l. Such stop means may comprisea sleeve 33 adjustably secured to the rod 13 for engaging the said portions, 1 I.

To stop themoperation of the feeding means, the drive connection 20, 2| between the pot I and rod l3 may be automaticallydisconnected. The detent 2| .carriesra shoe .oran'anti-frictionroller 24 which normally runs on a surface 25,,suitably secured to or formed :on vthe. bracket 32 behindthe .shoulder zflt A lever 25 pivoted at 21 at the end of the surface 25 has one end pivotally connected with the spindle 28 of a float 29. The spindle 28 is slidable in a bearing 30 secured to said pot. When the level of the metal'in the pot rises or lowers the float will lift and fall thus rocking the lever. The free end of the lever 26 is inclined at 3| and normally the inclined end 3| is positioned above the roller 24. However, when the metal in the pot reaches a predetermined level the float 29 will rise to swing the inclined end 3| into the path of the roller 24 and cause it to run up the incline 3| and along the lever 26. The detent 2| is thus moved to an inoperative position relative to the shoulder 20. The rod l3 and the follower l4 are thus not moved whereby additional slugs will not be fed to the pot l until the level of the metal therein drops sufiiciently to cause the lever 26 to be moved out of the path of the roller 24. When this occurs the feeding means will again'resume its function.

What we claim as our invention is:

ment thereof relative to that of the shoulder the rod; and cramping means carried by the follower for engaging thegalley to resist movement with the rod during its return stroke.

,5. Apparatus for-charging a melting pot of a typesetting machine comprising a movable melting pot; a guide on said machine; a galley having an open end for directing used slugs from the 1. Apparatus for charging a melting pot of a typesetting machine comprising a movable melting pot; means for carrying charging material and for-discharging it into the pot; means for feeding the material from the carrier into the pot comprising a reciprocating rod operable by the movable pot; a follower slidable on the rod and having a one-way drive connection therewith for advancing the material towards the pot on each forward movement of the rod; and means for retaining the follower in its advanced position at the end of each stroke.

2. Apparatus for charging a melting pot of a typesetting machine comprising a movable melting pot; means for carrying charging material and for discharging it into the pot; means for feeding the material from the carrier into the pot comprising a reciprocating rod operable by the movable pot in one direction; a follower slidable on the rod and having a one-way drive connection therewith for advancing the material towards the pot on each forward movement of the rod; means for returning the rod; and means carried by the follower having a cramping engagement with the carrier to resist movement with the-rod during its return stroke.

3. Apparatus for charging a melting pot of a typesetting machine-comprising a movable melting pot; a guide on said machine, a galley having an open end for directing used slugs from the galley into the pot, the galley being carried by the guide; bearings carried by the guide; a reciprocating rod slidably and removably mounted in said bearings; a shoulder carried by said pot;

adetent connected with the rod for engaging said shoulder to move the rod forward with the pot; means for returning the rod; a follower slidable on the rod and having'a one-Way drive connection therewith for advancing the slugs towards the pot on each forward movement of the rod; and cramping means carried by the follower for engaging the galley to resist movement with the rod during its return stroke.

4. Apparatus for charging a melting pot of a typesetting machine comprising a movable melting pot; a guide on said machine; a galley having an open end, for directing used slugs from the galley into the pot, the galley being carried by the guide, bearings carried by the guide; a reciprocating rod slidably and removably mounted in said bearings; a shoulder carried by said pot; a detent engaged'by said shoulder and adjustably connected with the rod to vary'the movegalley into the pot, the galley being carried by the guide; bearings carried by said galley; a reciprocating rod slidably and removably mounted in said bearings; a shoulder carried by said pot;

v a detent connected with the rod for normally engaging said shoulder to move the rod in one direction with the pot; spring means connected with the rod and a stationary part to return the rod; a follower slidable on the rod and having a oneway drive connection therewith for advancing the slugs towards the pot on each forward movement of the rod; cramping means carried by the follower for engaging the galley to resist movement with the rod during its return stroke; a

surface carried by thepot behind the shoulder; an anti-friction roller on the detent normally running on said surface; a lever having an inclined end; a float in the not connected with the lever for positioning the inclinedend thereof in the path ofthe roller when the level of the metal in the pot rises above a predetermined point so that the roller will run upthe inclined end of the lever and along it to move the detent out of position for engagement with the shoulder.

6. Apparatus for charging a melting pot of a typesetting machine comprising a movable melting pot; means for carrying charging material and for discharging it into the pot; means for feeding the material from the carrier into the pot comprising a reciprocating rod having a oneway drive connection with the pot; a follower slidable on the rod and having a one-way drive connection therewith for advancing the ma terial towards the pot as the rod is moved thereby; means for returning the rod to its initial position; and means for retaining the follower in its advanced position at the end of each stroke thereof.

7. Apparatus for charging a melting pot of a typesetting machine comprising a movable melting pot: means for carrying charging material and for discharging it into the pot;,means for feeding the material from the carrier into the pot comprising a reciprocating rod having a disengageable drive connection with the pot; float controlled means for engaging and disengaging said drive connection; a follower slidable on the rod and having a one-way drive connection therewith for advancing the material towards the pot on each forward-movement ofthe rod; and means for retaining the follower in its advanced position at the end of each stroke.

- ANDREW OLDING HEBB. WILLIAM A.-WHITNEY. 

